//
//  UIView+KeyPathView.m
//  DoubleJinGe
//
//  Created by 喻贵华 on 16/7/1.
//  Copyright © 2016年 Rex. All rights reserved.
//

#import "UIView+KeyPathView.h"



@implementation UIView (KeyPathView)

@dynamic borderColor;
@dynamic borderWidth;
@dynamic cornerRadius;

- (void)setBorderWidth:(CGFloat)borderWidth

{
    
    if(borderWidth <0)return;
    
    self.layer.borderWidth = borderWidth;
    
}



/**
 
 * 设置边框颜色
 
 */

- (void)setBorderColor:(UIColor *)borderColor

{
    
    self.layer.borderColor = borderColor.CGColor;
    
}



/**
 
 *  设置圆角
 
 */

- (void)setCornerRadius:(CGFloat)cornerRadius

{
    
    self.layer.cornerRadius = cornerRadius;
    
    self.layer.masksToBounds = cornerRadius >0;
    
}
@end

@implementation UITextField(DTCKeyPath)

@dynamic placeHolderColor;
@dynamic placeHolderFont;

- (void)setPlaceHolderColor:(UIColor *)placeHolderColor
{
    [self setValue:placeHolderColor forKeyPath:@"_placeholderLabel.textColor"];
}

- (void)setPlaceHolderFont:(UIFont *)placeHolderFont
{
    [self setValue:placeHolderFont forKeyPath:@"_placeholderLabel.font"];
}
@end

@implementation UIButton (DTCKeyPath)

@dynamic buttonStyleImageTopTitleDown;

- (void)setButtonStyleImageTopTitleDown:(BOOL)buttonStyleImageTopTitleDown
{
    if (buttonStyleImageTopTitleDown == NO) {
        return;
    }
    // 1. 得到imageView和titleLabel的宽、高
    CGFloat imageWith = self.imageView.frame.size.width;
    CGFloat imageHeight = self.imageView.frame.size.height;
    
    CGFloat labelWidth = 0.0;
    CGFloat labelHeight = 0.0;
    if ([UIDevice currentDevice].systemVersion.floatValue >= 8.0) {
        // 由于iOS8中titleLabel的size为0，用下面的这种设置
        labelWidth = self.titleLabel.intrinsicContentSize.width;
        labelHeight = self.titleLabel.intrinsicContentSize.height;
    } else {
        labelWidth = self.titleLabel.frame.size.width;
        labelHeight = self.titleLabel.frame.size.height;
    }
    
    // 2. 声明全局的imageEdgeInsets和labelEdgeInsets
    UIEdgeInsets imageEdgeInsets = UIEdgeInsetsZero;
    UIEdgeInsets labelEdgeInsets = UIEdgeInsetsZero;
    
    // 3. 根据style和space得到imageEdgeInsets和labelEdgeInsets的值
    CGFloat space = 10;
    
    switch (0) {
        case 0://上
        {
            imageEdgeInsets = UIEdgeInsetsMake(-labelHeight-space/2.0, 0, 0, -labelWidth);
            labelEdgeInsets = UIEdgeInsetsMake(0, -imageWith, -imageHeight-space/2.0, 0);
        }
            break;
        case 1://左
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, -space/2.0, 0, space/2.0);
            labelEdgeInsets = UIEdgeInsetsMake(0, space/2.0, 0, -space/2.0);
        }
            break;
        case 2://下
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, 0, -labelHeight-space/2.0, -labelWidth);
            labelEdgeInsets = UIEdgeInsetsMake(-imageHeight-space/2.0, -imageWith, 0, 0);
        }
            break;
        case 3://右
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, labelWidth+space/2.0, 0, -labelWidth-space/2.0);
            labelEdgeInsets = UIEdgeInsetsMake(0, -imageWith-space/2.0, 0, imageWith+space/2.0);
        }
            break;
        default:
            break;
    }
    // 4. 赋值
    self.titleEdgeInsets = labelEdgeInsets;
    self.imageEdgeInsets = imageEdgeInsets;
}
@end
